Mounting for mining tools or machines.



W. PRELLWITZ.

MOUNTING FOB MINING TOOLS 0B- MACHINES.

APPLIOA'HOI mum MAY 0, 1009.

1,023,595. Patented Apr. 16, 1912.

2 SHEETS-SHEET 1.

3 "5 flventw/ COLUMBIA PMNOGRAFl-l $0.,WA8MNGION, D. c.

W- PRELLWITZ.

MOUNTING FOR MINING TOOLS 0B MACHINES.

APYLIOATIOK nun MAY 6, 1909.

Patented Apr. 16, 1912.

2 BHEETB-SHEBT 2.

wine 0) jnwrefop UNITED STATES PATENT OFFICE.

WILLIAM PRELLWITZ, 0F EAS'ION, PENNSYLVANIA, ASSIGNOR T0 INGERSOLL-RANDCOMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW JERSEY.

MOUNTING FOR MINING TOOLS OR MACHINES.

To all whom it may concern:

Be it known that I, WVILLIAM PRELLWITZ, a citizen of the United States,and resident of Easton, in the county of Northampton and State ofPennsylvania, have invented a new and useful Mounting for Mining Tools0r Machines, of which the following is a specification.

My invention relates to a mounting for mining tools, and is particularlywell adapted to the mounting of a coal cutting tool in variousadvantageous positions on a primary support for floor, ceiling or breastcuts, while the operating handles for controlling the feed of the tooland its swing through its cutting are are maintained in the samerelative position one to the other and both within easy reach of thehands of the operator.

A practical embodiment of my invention is represented in theaccompanying drawings in which,

Figure 1 is a view in side elevation of a tool mounted on a column inposition for making what I am pleased to term a breast cut; Fig. 2 is anend view of the same; Fig. 3 is a top plan view of the same; Fig. 4 is asection in the plane of the line A-A of Fig. 1; Fig. 5 is a view in sideelevation, showing the same tool in a position for a low down cut; Fig.6 is an end view of the same; Fig. 7 is a similar view partly insection; Fig. 8 is an inner end view of the main supporting arm, showingthe two sets of half bearings formed thereon; Fig. 9 is a view of thesame in side elevation, showing also the hearing at the opposite end ofthe main supporting arm; Fig. 10 is a top plan View of the same, andFig. 11 is an end view of the same opposite that shown in Fig. 8.

The primary support which may conveniently be a column is denoted in theseveral figures by 1; the shell of the cutting tool by 2, the toolitself as a whole, by 3, its feed screw by 1, the handle for operatingthe feed screw by 5, the worm wheel for swinging the machine back andforth through its cutting arc, by 6, the worm for operating the wormwheel, by 7, and the handle for operating the worm by 8. These parts maybe of any well known or approved form, my present invention being rectedto the means for mounting the parts.

Specification of Letters Patent.

Application filed May 6, 1909.

Patented Apr. 16, 1912.

Serial No. 494,446.

The shell 2 of the tool is supported by means of a tapered stem 9 in atapered socket 10, in which it is firmly locked by means of a bolt 11,as is usual. The socket- 10 is formed in the end of a supporting arm 12which is provided at its opposite end with a stem 13, preferably at anangle of 90 to the longitudinal axis of the socket 10, the said stem 13being provided with a shoulder 14 and with a tapered portion 15 by meansof which it is drawn snugly into engagement with the wall of acorresponding socket 16 in the rotary hub 17 of the worm wheel 6. Themeans for holding the stem 13 fast in the hub 17, consists in thepresent instance, of a screw 19 tapped into the end of the stem andpassing through a cap plate 20 resting against the end of the hub. Anytendency of the cap plate 20 to rotate relatively to the stem 13, isovercome by a. pin 21 set through the cap: plate into the stem eccentricto the center of the cap plate and stem.

The hub 17 is mounted in rotary adjustment in the plane of the wormwheel 6, in a bearing one-half of which is denoted by 22, and theopposite half of which, denoted by 23, is formed in the end of thesupporting arm 21. The portion of the hub 17 which rotates within thebearing 22, 23, is in the form of a segment of a sphere and the hearingis similarly formed to receive it. The half bearing 22 is held in thedesired rela tion to the half bearing 23, by means of bolts 25, 26,passing through the half bearings 22, 23 and along an annular groove 27formed in the hub 17. The opposite end of the supporting arm 24, to wit:that end toward the column 1, is provided with a half bearing 28,extending longitudinally at an angle of 90 to the longitudinal axis ofthe bearing 22, 23, and also with a half bearing 29 extending parallelwith the longitudinal axis of the bearing 22, 23. The half bearing whichco-acts with the half bearings 28, 29, is denoted by 30, and is clampedto the column 1 and to the comp-anion half bearing on the end of the arm24, to wit: either the bearing 28 or the bearing 29, by means of bolts31, 32. The half bearings 28, 29, in the end of the arm 24 are eachprovided with a pair of bolt holes as clearly shown in Fig. 8, toreceive the bolts 31, 32, and the single half bearing 30 coiiperateswith either the one or the other of the half bearings 28, 29, atpleasure, to locate the arm 24 with its bearing 22, 93, either in ahorizontal or vertical position, as may be desired.

\Vhen located, as shown in Figs. 1 to 4 inclusive, the tool, denoted by3, is in position to make a breast out, while in the form shown in Figs.5, 6 and 7, the arm is turned one-quarter around, thereby bringing thetool low down, as shown in Figs. 6 and 7, for a low down or floor cut.It is obvious that the main supporting arm 24 might be turned a quarterway in the reverse direction, thereby raising the tool by sliding thesupport along up the column in position to make a ceiling cut close tothe top and also that the arm 24 might be completely reversed or turneda half revolution instead of a quarter, in either direction, if sodesired.

It will be observed that in. supporting the tool in these variousadvantageous positions, there is no part of a hearing or additionalfastening required, identically the same parts being used whatever maybe the position required; and it will furthermore be observed thatwhatever the position which the parts may assume in rotating the mainsupporting arm 24 and clamping it to the column, the handles for feedingthe tool and for swinging the tool back and forth through its arc cut,will be maintained in the same relative positions, always withinconvenient reach of the single operator to manipulate them. It will befurther noted that the joint between the arm 12 and the arm 24 is in thenature of a ball and socket joint and serves, when the primary support 1is, for any cause, somewhat out of a true vertical position, to providefor the adjustment of the stem 13 of the arm 12 to a true horizontal ortrue vertical position. Attention is also called to the position of theoperating tool with its longitudinal axis in the plane of thelongitudinal axis of the supportim stem 13 of the arm 12, wherebylateral or twisting jar or strain is minimized.

In using the word tool throughout the specification and claims I intendto include such devices as are commonly called machines, as well as thesimpler form referred to sometimes as tools and sometimes as machines.

It is obvious that changes might be resorted to in the form andarrangement of the several parts without departing from the spirit andscope of my invention; hence I do not wish to limit myself strictly tothe structure herein shown and described, but

\Vhat 1 claim is:

1. A mounting for a mining tool comprising a main supporting arm and ashell supporting arm, the main supporting arm being provided with aplurality of half bearings at one end. for engaging a primary supportand a half bearing at its opposite end for receiving the shellsupporting arm in swinging adjustn'ient and half bearings and boltsarranged to cooperate with the half hearings on the main supporting arm.

A mounting for a mining tool comprising a main supporting arm providedwith a plurality of half bearings at one end and with a halt hearing atthe opposite end. a shell supporting arm provided with a socket at oneend and a stem at the opposite end extending at right angles to thesocket, a worm wheel provided with a hub in which the said stem isseated, and halt bearings and bolts arranged to cooperate with the halfbearings on the arm.

3. A mounting for a. mining tool comprising a shell supporting arm, amain supporting arm and a worm wheel hub, the shell supporting arm beingprovided with a shouldered stem seated within the worm wheel hub, thesaid worm wheel hub being formed as a segment of a sphere and providedwith an annular groove and the main supporting arm being provided withhalf bearing fitted to receive said hub, a half bearing arranged toco-act with said half bearing on the main supporting arm and boltspassing through the said half bearings and the groove in the hub.

In testimony, that I claim the foregoing as my invention l have signedmy name in presence of two witnesses, this fourth day of May 1909.

WILLIAM PRELLVVIT Z.

Witnesses:

F. Gnoncn BARRY, I'IENRY TIIIEME.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G.

